Stepping Out With The E6750 + P5K Deluxe

[msgclb]

• Intel Core 2 Duo E6750 (G0) - L719A747
• Asus P5K Deluxe 0311 BIOS
• 2x1GB Crucial Ballistix PC2-8500 in black slots
• Water cooled

The following are the basic settings used with all my tests.

Settings Used:

JumperFree Configuration Settings
AI Overclocking: Manual
CPU Ratio Control: Manual
- Ratio CMOS Setting: 8
FSB Frequency: 333
PCI-E Frequency: 100
DRAM Frequency: DDR2-667
DRAM Command Rate: 2T
DRAM Timing Control: Manual
CAS# Latency: 5
RAS# to CAS# Delay: 5
RAS# Precharge: 5
RAS# Activate to Precharge: 15
TWR: 8
TRFC: 30
TWTR: 8
TRRD: 8
TRTP: 8
DRAM Static Read Control: AUTO

Transaction Booster: AUTO
Boost Level: N/A
Clock Over-Charging Mode: AUTO

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

CPU Voltage: 1.35
CPU Voltage Reference: AUTO
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.50
DRAM Voltage: 2.20
FSB Termination Voltage: 1.20
North Bridge Voltage: 1.25
North Bridge Voltage Reference: AUTO
South Bridge Voltage: 1.05

Advance CPU Settings
CPU Ratio Control: Manual
- Ratio CMOS Setting: 8
C1E Support: Disabled
Max CPUID Value Limit: Disabled
Vanderpool Technology: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled
PECI: Enabled

USB Configuration
USB Functions: Enabled
Legacy USB Support: Disabled (enable it to detect USB flash drives)

Ambient temperature ~24c to 25c

2671MHz - 333FSB x8 1:1

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M


Now that I've confirmed the stock settings work I'll move on.

[msgclb]

2832MHz - 354FSB x8 3:5

DRAM Static Read Control: Auto
Transaction Booster: Auto
CPU Voltage: 1.35
CPU Voltage Reference: Auto
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.50
DRAM Voltage: 2.20
FSB Termination Voltage: 1.20
NB Voltage: 1.40
NB Voltage Reference: Auto
SB Voltage: 1.20

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M


I couldn't get DDR2-1200 using memory voltage of 2.20v.

[msgclb]

3520MHz - 440FSB x8 4:5

DRAM Static Read Control: Auto
Transaction Booster: Auto
CPU Voltage: 1.475
CPU Voltage Reference: Auto
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.70
DRAM Voltage: 2.20
FSB Termination Voltage: 1.50
NB Voltage: 1.40
NB Voltage Reference: Auto
SB Voltage: 1.20

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M

[msgclb]

3600MHz - 450FSB x8 1:1

DRAM Static Read Control: Auto
Transaction Booster: Auto
CPU Voltage: 1.525
CPU Voltage Reference: Auto
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.70
DRAM Voltage: 2.20
FSB Termination Voltage: 1.50
NB Voltage: 1.40
NB Voltage Reference: Auto
SB Voltage: 1.20

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M

[msgclb]

3304MHz - 472FSB x7 4:5

DRAM Static Read Control: Auto
Transaction Booster: Auto
CPU Voltage: 1.40
CPU Voltage Reference: Auto
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.60
DRAM Voltage: 2.20
FSB Termination Voltage: 1.40
NB Voltage: 1.40
NB Voltage Reference: Auto
SB Voltage: 1.20

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M

[msgclb]

3444MHz - 492FSB x7 5:6

DRAM Static Read Control: Auto
Transaction Booster: Auto
CPU Voltage: 1.45
CPU Voltage Reference: Auto
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.70
DRAM Voltage: 2.20
FSB Termination Voltage: 1.50
NB Voltage: 1.40
NB Voltage Reference: Auto
SB Voltage: 1.20

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M

[msgclb]

3500MHz - 500FSB x7 1:1

DRAM Static Read Control: Auto
Transaction Booster: Auto
CPU Voltage: 1.475
CPU Voltage Reference: Auto
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.70
DRAM Voltage: 2.20
FSB Termination Voltage: 1.50
NB Voltage: 1.40
NB Voltage Reference: Auto
SB Voltage: 1.20

CPU - Idle


CPU - Load


Everest Ultimate 4.10.1076 Beta Build - Super Pi 32M

[lawrywild]

Ever heard of editing your post?

[msgclb]

Ever heard of editing your post?

I've edited the above posts. If you see any mistakes let me know so I can correct them.

[AAbenson]

msgclb do you really need v>1.5 at 3.6??unstable at anything lower thhan 1.5v at 3.6?

[lawrywild]

I've edited the above posts. If you see any mistakes let me know so I can correct them.

Ok, just at first when there was no pics, I thought you were just posting about 5 words in each post

[msgclb]

Ok, just at first when there was no pics, I thought you were just posting about 5 words in each post

You were just to fast for me to get my act together. Also, the server where my images are turned out to be down.

[msgclb]

msgclb do you really need v>1.5 at 3.6??unstable at anything lower thhan 1.5v at 3.6?

Yes. I started with the 1.475v that was necessary to get 3520MHz - 440FSB x8 4:5 stable and gradually worked up to the 1.525v. Using 1.5v I had a crash at 3 hours so I'm not sure that 1.525v would be stable going past the 4 hours where I stopped.

At this point I drop the multiplier to 7 to see if I could get 500FSB. I'd be surprised if I could get any higher that the 3500 - 500FSB x7 1:1.

[426hemi]

why is your cpu pll voltage so high? does it help with stability?

[msgclb]

why is your cpu pll voltage so high? does it help with stability?

I started out with these minimum default settings to test 333FSB x8 DDR2-667 1:1.

CPU Voltage: 1.35
CPU Voltage Reference: AUTO
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.50
DRAM Voltage: 2.20
FSB Termination Voltage: 1.20
North Bridge Voltage: 1.25
North Bridge Voltage Reference: AUTO
South Bridge Voltage: 1.05

When I found my max stable memory setting I was using the following:

CPU Voltage: 1.35
CPU Voltage Reference: AUTO
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.50
DRAM Voltage: 2.20
FSB Termination Voltage: 1.20
North Bridge Voltage: 1.40
North Bridge Voltage Reference: AUTO
South Bridge Voltage: 1.20

To get 472FSB x7 DDR2-1180 4:5 stable I raised both vcore to 1.4v and cpu pll to 1.6v.

I don't remember why I raised cpu pll to 1.70v for 440FSB x8 DDR2-1100 4:5 but I believe I tested this after 450FSB x8 DDR2-900 1:1 and I had a hard time getting that stable. I raised vcore a couple of times and then cpu pll until I had vcore of 1.525v and cpu pll of 1.7v.

It looks like most of my tests show the following correlation:

vcore - cpu pll
1.35v - 1.50v
1.40v - 1.60v
1.475v - 1.70v

After getting a stable setting I haven't tried lowering cpu pll to see what would happen.

[zanzabar]

very through documentation


do u think that u could drop ur ram down to 4-4-4-12 or better. that ram should alot better

[sofarfrome]

msgclb do you really need v>1.5 at 3.6??unstable at anything lower thhan 1.5v at 3.6?

yeah...not impressed with that at all. I gotta say, so far I have not been impressed with too much of anythiing I have seen with these G0 steppings other than lower temps.

[msgclb]

very through documentation


do u think that u could drop ur ram down to 4-4-4-12 or better. that ram should alot better

I will be going back to see what lower timings will do.

[zanzabar]

I will be going back to see what lower timings will do.

[MikalCarbine]

Great results , I have the same exact stepping, L719A747. I can hit 3.6Ghz with less than stock volts though What's your max OC and FSB?

[msgclb]

Great results , I have the same exact stepping, L719A747. I can hit 3.6Ghz with less than stock volts though What's your max OC and FSB?

What settings do you use to hit 3.6Ghz? Am I going to have to get a Abit IP35 Pro? (That's a rhetorical question!)

So far these are my max OC / FSB.
3600MHz - 450FSB x8 1:1
3500MHz - 500FSB x7 1:1

I'm going to see if I can achieve these and higher OC / FSB using lower voltages.